Fix googleapis Readme (#573)

Co-authored-by: sidhhu <sidhhu@verizonmedia.com>
hyperium · Apr 27, 2021 · 4926c60 · 4926c60
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commit 4926c60
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diff --git a/tonic-build/README.md b/tonic-build/README.md
@@ -50,6 +50,8 @@ A good way to use Google API is probably using git submodules.
 So suppose in our `proto` folder we do:
 ```
 git submodule add https://github.com/googleapis/googleapis
+
+git submodule update --remote
 ```
 
 And a bunch of Google proto files in structure will be like this: